Bucket



H. S. ATKINSON.

BUCKET. APPLICATION FILED JUNE 25. l9l5. RENEWED AUG. 2, 1920. 1,371,291, Patented Mar. 15, 1921.

. r U 3 SHEETS-SHEET I. fyl H; 4 J I I J g L fig.

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Swvcwtoz NORRIS PETERS. MC" LITHOH WASHINGTON D C H. s. ATKINSON;

BUCKET. APPLICATION FILED JUNE 25, I9I5. RENEWED AUG. 2, 1920.

- 3 SHEETS-SHEET 2- Patented Mar. 15; 1921.

H. S. ATKINSON. BUCKET. APPLICATION FILED JUNE 25 I9I5 RENEWED AUG. 2, I920.

Patented Mar. 15, 1921.

3 SHEETSSHEET a.

WI/inasmin excavating buckets, and

UNITED STATES HERBERT SJ ATKINSON, OF EAST ORANGE, NE'\V JERSEY, ASSIGNOR TO THE-HAYWARD Y., A CORPORATION OF NEW YORK.

COMPANY, OF NEW YORK, N.

PATENT OFFICE.

BUCKET.

sex and tdtate of New Jersey, have invented certain new and useful improvements in Buckets, or which the following is a full, clear. and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improvement although I have shown the same-as applied to erated bucket of the clam-shell type, I do not wish to be understood as limiting my invention to the precise form ot bucket illustrated in the drawings.

My invention has especial utility in those forms of buckets wherein supporting mem- 7 bers are pivotally connected to the upper center or head of the bucket, in spacedapart relation; also in those forms of bucket wherein the lower center has spacedapart pivota connections with the bowl sections or extensions thereof.

In the form of bucket just mentioned, and illustrated in the drawings, wherein the referred to pivotal connecting points are spaced from each other, it is desirable to have some means of holding the parts securely together in operative relation, so that when the bucket is lowered onto the material there will be no danger, especially where the material forms an uneven surface, of the bucket tilting, and the parts being thrown out of their normal relative positions.

One object or myinvention is to provide means whereby the relative movements of the supporting members and head are controlled within certain defined limits not only during the normal operation of the bucket upon a substantially even surface, but also when the bucket is operated upon a more or less uneven bed of material. Thereby, the bucket head is not only prevented from tilting, being always maintained in it s normal operative position, but the supporting members themselves in operation, are caused to move substantially coincidently with each other.

A further object of my invention is to provide means, at each side oi the bucket, at the pivotal connection of the lower center with the bowl sections or their extensions,

a sheave-op- Specification of Letters Patent. Patented M 1921 AppIication filed June 25, 1915, Serial No. 36,177.

Renewed August 2, 1920. Serial 110.400,?99.

whereby the lower center casting is'prevented from turning, and is retained in an approximately horizontal position, and whereby also the respective bowl sections, in their oscillating movements, from their pivotal connections with the lower center castin are caused to move substantially coincidently with each other. This coincidence of movement in the case both of the upper and lower centers, is desirable, so that both of the bowl sections may operate with the same uniform digging or excavating effect.

A further object of my invention is to provide means for the accomplishment of the objects stated, which shall be economical to manufacture, which is strong and durable, easily and quickly installed, and which will permit of replacement of broken parts with a minimum expenditure of time and labor. Furthermore, which may be readily and quickly adjusted to compensate for wear of the parts, whenever wear necessitates adjustment.

All of these objects will be readily apparent from the following description taken in connection with the accompanying drawings, in which:

Figure 1 is a side elevation of one form of bucket embodying my improvements;

Fig. 2 is an end elevation of same;

Fig. 3 is a side elevation in part broken away; and

Fig. 4 is a plan view of a detail, partly broken away.

Referring to the construction illustrated,

A indicates in whole, a clam-shell bucket, comprising a head indicated in whole at B, a plurality of bowl sections indicated at G, D, which are pivotally connected to supporting members E, the latter being, in turn, pivotally'connected to the head B.

A set of sheaves E are provided in the head B and a set of sheaves F are provided in the lower center or perpendicularly moving sheave-carrying member indicated at G, to which latter the bowl sections C, D, are also pivotally connected through the pivoted members H, I. v

A closing line J passes down through one of the rope thimbles L at one side of the supporting head, downwardly and around one of the outside sheaves in the lower center, upwardlyand over the alining outer sheave 'n the upper center, thence downwardly and around the middle sheave in the lower center, thenceupwardly and around the opposite outer sheave in the upper center,

thence downwardly and around-the other outer-sheave in the lower center, and upwardly andthrough the other-rope thimble j on the other side of the supporting head in- 'dic'ated at L. Around the central sheave in the upper center passes 'a holding rope M,

forsupporting the bucket. 'The bucket is opened by slackening oH-the closing line J, while holdingtaut the holding line, where upon 'the sheave carrying member G1 descends, opening the bowl sections. it is' closed by hauling in on the closing rope J,

drawing the upper and lower centers together.

-The head B comprises a casting,'formed centrally with a recess to receive therein the sheaves already referred to, and at each side is provided with an outwardly and downwai'dly projecting hood, indicated at N, the

lower portion of which is spaced from the body of the headcasting to form a housing for the upper ends of. the supporting mem bersE, the latter being pivotally connected to the head by means of the pins O, which pass through the parts N, through the members E, and into and through a flange on the V inain body of the casting, to which they may be secured in any suitable manner. The

upper ends of. the V supporting members E,

have formed thereon and preferably integral "therewith, bearing lugs 0, 0 The suplatter are forined' with curvingextensions porting members E also have formed thereat their upper on, or rigidly secured thereto ends, holding jaws, each comprising a pair ofplates P, P, wh1ch aws are adapted to receive, at the inner lower ends thereof, and

to have-secured thereto, pivotally, one end of-a chain link P P to which are pivotally secured respectively, relatively long links P P. To the long links 1?, P are pivotallyconnectedf short links Pf, P which P P adapted to ass through bores in the holding lugs O, and: to be secured in V move withoutinterfering with theyother. I

It willbe V singlevlink, and the link a double link positionby holdin :nuts 1 F, the ends of theextensions P being threaded for the reception of said nuts and also to providei'or proper adjustment-of the parts. noted that the longer link 1? is a having a longitudinal inner space through which may pass the single link' Pf and as both these links are relatively thin,;each may Each of the pivoted members H,'l, is.pro-

' vided with a" luralit of bearin collars Q,

QQwhi'ch are morec'learly illustrated in Fig. 2. .As'each of said members H, I,- is provided with a similar set of bearing. collars, a

1 description of one will suiiice for allfi- These bearing collars, Q, Q, are preferably formed separately from themembers H, I, and riveted thereto one at the inside and one at 'ber Q7 berg, inthis; opening movement also the: I! 10 'ftive movement, such. as might of the bucket-head upon 7 the outside, and areformed with central bore, through which, andthrough a bore in theend of the pivoted members, H, I, and into a recess inthe sheave'carrying member G, passes a.- pin indicated at R, for holding the parts in proper position. The bearing collars Q, Q, are'eachformed withja pel:

ripheral groove, indicated at S forthereception of the links of -a chain indicated at T,

of extensions U of the,chaiiis.T,.T', which threaded ends are held in properly adjusted" position by means of holding nuts U It will be observed that the holding collars Q, Q upon the ends of the pivoted members 'I are directly oppositely disposed to similar bearing collars on the ends of theipivoted members H, the endsrof the chains T, T where secured to the bearing collars on the member I being disposed one downwardly and one upwardly, and those on the member ii and one upwardlybutin reverse ,order to the positions of the chain ends fastened to the member I, the relative "positions of the chains being such that they may clear each other readily in passing.

The operation willbe quite clearwithout lengthy description. Assuming the'p'arts to The bearing collars Q, Q are also formed with radially projecting lugs U, which are bored to, receive the threaded ends likewise disposed" one downwardly neon av the closed aosition shown in Fl .1

the closing line J is slackened, and the sheave-carrying member G descends; in its descent the. bowl sections open, the pivoted members H, 'I being given an f oscillating movement upon their pivotal connections vwith the member G, the collars Q, rotating toward each other, and in this rotation the chains T will unwind from oneof the members Qwiiiding upon the opposite member (,2 and thechain T will wind upon the memand unw nd from the opposite memsupporting members E have a slight osci.l'

movement, and in this movement a similar. winding and unwinding operation is present in the case oft-he chain-link-co11 trol ronnected to the upper ends of said mom bersas hasjust been describedfor the opera each other. The sameistrue of the movement of the pivoted members H, .I. The

said members oscillating movement of one of by a similar is only such as is permitted.

the latter must oscillation of the opposing member, since the control chain is taken up by one bearing collar of one pivoted member, to the extent only that it is given up or unwound from the bearing collar on the oppositely disposed member. Thus the pivoted members, and consequently the bowl sections, to which they are connected, must move coincidently with each other both in their opening and their closing movements; and this is true where the operation of the bucket is performed upon a bed of material even or uneven in its surface. The operation of the invention is more clearly ilustrated in Fig. 3, wherein the bucket is shown in open position, and wherein will be seen the relative positions assumed by the respective parts as distinguished from their positions indicated in Fig. 1, when the bucket is closed. Furthermore, by my invention, the sheave-carrying member in the lower center is prevented from tilting or turning, and will always occupy a substantially horizontal position, in the operation of the bucket.

I desire it to be understood that I do not confine myself to the precise details of construction and arrangement of the invention herein set forth, as modification and variation'may be made without departing from the spirit of the invention, as defined by the appended claims.

hat I claim is 1. In a bucket, the combination with a plurality of supporting members, and a head to which said supporting members are pivotally connected, of a pair of jointed means having operative connection with an adjoining pair of supporting members, and means securing said jointed means to said members adjacent their pivotal'connections with the head adapting one of said jointed means to be paid out as the other is simultaneously taken in on the oscillating movements of the supporting members, said jointed means being unsecured intermediate their ends.

2. In a bucket, the combination with a plurality of oscillating supporting members, and a head to which said supporting members are pivotally connected, of a pair of flexible means operatively connecting, movably, an opposing pair of supporting members, and holding means securing said flexibl'e means to said 'members adjacent their pivotal connections with the head adapting one of said flexible means to be paid out as the other is simultaneously taken in on the oscillating movement of said members, said flexible means being unsecured intermediate their ends and free to move bodily lengthwise on such movement.

3. In a bucket, the combination with a plurality of oscillating supportng members, and a head to which said supporting members are pivoted, of a pair of linked members having their respective opposite ends secured to the respective supporting members adjacent their pivotal axes on said head, and adapted 'to move bodily lengthwise in opposite directions on each oscillatingmovement of said supporting members, one of said linked members being paid out as the other is simultaneously taken in on the oscillating movement oi said supporting mem-v bers, and said linked members being unsecured intermediate their ends.

4. In a bucket, the combination with a plurality of supporting members, and a head to which said supporting members are pivotally connected, of linked members operatively connecting, movably, an opposing pair of supporting members, and holding means securing said linked members to said supporting members adjacenttheir pivotal axes on said head, in position to wind about and to unwind from about said axes on the oscillating movements of said supporting members.

5. In a bucket, the combination with a plurality of oscillating supporting members, and a head to which said supporting membears are pivoted, of a pair of holding members on each of said supporting members adjacent the axes of the pivotal connections of said supporting members withsaid head. the members of each pair moving in opposite directions with each oscillating movement of said supporting members, and flexible-means connecting said holding members on an opposing pair of supporting members, said flexible means being adapted to be paid out and taken up by the respective holding members on the operating movements of the supporting members.

6. In a bucket, the combination with a plurality of oscillating supporting members, and a head to which said supporting membersare pivoted, of holding members connected to the pivoted ends of each of said supporting members at points spaced apart about the axes thereof and having limited movement in opposite directions upon each oscillation of said supporting members, and a plurality of linked members, the opposite ends of which connect said holding members respectively on an adjoining pair of supporting members.

7. In a bucket, the combination with a pair of pivoted members, turning on their axes in opposite directions, of linked members secured to the pivoted ends of said pivoted members in position to wind about and unwind from about the axes of said pivoted members.

8. In a bucket, the combination with a pair of pivoted members, oscillating on their axesin opposite directions, of a pair of linked members, and means securing the ends of said linked members to the pivoted ends of said pivoted membersin position to wind about and unwind from about the axes of said pivoted members. V

9. In a bucket, the combination with a pair of pivoted members, pivoted to turn on their axes in opposite directions, of a pair of linked members, and means securing, in reverse pos1t1 on, the ends of said pair of linked members to the pivoted ends of said pivoted members, whereby said linked members move in opposite directions in winding about and unwinding from about the axes of said pivoted members.

10. In a bucket, the combination with pair of pivoted members, oscillating on their axes in opposite directions, of bearing mem-- bers carried by said pivoted members, having linilted rotary movement about the p1votal axes of said pivoted members, and flexisheave-carrying member, pivoted members having operative connection with said bowl sections and with said sheave-carrying memher and pivoted to the latter to move on separate axes, of jointed means having operative connection with an adjoiningpair of said pivoted. members and means securing said jointed'means to the pivoted ends of said pivoted members in position to be paid out and taken up on the oscillating movements of said pivoted members, said jointed means being unsecured intermediate-their ends.

12. In a bucket, the combination with a plurality of bowl sections of 'movable sheave-carrying member, pivoted members having operative connection with said bowl sections and with. said sheave-carrying mem her and pivoted to the latter to turn on separate axes, flexible members operatively connecting movably an opposing pair of said pivoted members, and holding means securing said flexible members to the pivoted ends of said pivoted members, in position to be paid out and taken up on the oscillating movement of said pivoted members, said flexible members'being free to move bodily lengthwise on suchmovement.

13. In a bucke t,'the combinationwith a plurallty of bowl sectlons, of a movable sheave-carrying member, pivoted members having operative connection with said bowl sections and with sald sheave-carrying mem-- 7 her and pivoted to the latter to turn on separate axes, and a plurality of linked members having their respective opposite ends secured to the respective pivoted ends of said pivoted members in position to move bodily lengthwise in opposite directions on each turnin movement of said pivoted members,

14. In a bucket, the combination with a 'member at opposite sides of plurality of bowl sections, of a movable sheave-carrying member, pivoted members having operative connection with said bowl sections and with said sheave-carrying member, and pivoted to the latter to turn on separate axes, of a pair of linked members, having their respective ends secured to the pivoted ends of the respective pivoted members in reverse position", whereby, on each turning movement of said pivoted members, the pair of linked members will move bodily lengthwise in opposite directions, winding about and unwinding from about the axes of said pivoted members.

15. In an excavating bucket, the combination with a plurality of oscillating supporting members and a head to which said supporting members are pivoted, of means for controlling and limiting therelative movement of the head and supporting members, said means comprising a holding member on each of said supporting members extending angularly to the pivotal axis thereof, an-

7 other holding member thereon'likewise disposed angularly to said pivotal axis said holding members having limited movement in opposite directions on the oscillating movement of the supporting members and linked members whose opposite ends connect the first and second named holding members of an adjoining set of supporting members, whereby movement may lee-permitted to one supporting member only and to the extent that movement is permitted to the other supporting member. I i I 16. In an excavating bucket, the combination with a plurality of oscillating supporting members and a head to which said supporting members are pivoted,-of means for controlling and limiting the relative movement of the head and supporting members, said means comprising a holding memher on each of said supporting membersextending angularly tothe pivotal axis thereof, another holding member thereon likewise disposed angularly to said pivotal axis, said holding members having limited movement in opposite directions on the oscillating movements of the supporting members, and flexible members whose opposite ends connect the first and second named holding members 01": an adjoining set of supporting members, whereby movement may be permitted to one supporting member only and to the extent that movement is permitted to supporting members pivotally connecting said bowl sections and said head, a sheavecarrying member, pivoted means connecting said bowl sections with said sheave-carrying the latter in spaced apart relation, bearing riedby saidpivoted means having limited members car rotary movement about the pivotal axis of the said pivoted means, and flexible members secured to and adapted to wind upon and unwind from the oppositely disposed bearing members when the bowl sections are opened and closed.

18. In an excavating bucket, the combination of a head, a plurality of bowl sections, supporting members pivotally connecting said bowl sections and said head, a sheavearrying member, pivoted members secured to said bowl sections and pivoted to said sheave-carrying member at opposite sides of the latter in spaced apart relation, a pair of flexible members connected to opposing supporting members at their pivotal connection with said head, a pair of flexible members connected to said pivoted members at their pivotal connection with said sheavecarrying member, and means on said supporting members and on said pivoted.1nembers whereby the respective flexible members may be wound and unwound from about the pivotal axes of one set of supporting members and of one set of pivoted members while being unwound from and wound about the pivotal axes of the opposite set of supporting members and of the opposite set of pivoted members.

19. In an excavating bucket, the combination of a head, a plurality of bowl sections, supporting members pivotally connecting said bowl sections and said head, a sheavecarrying member, pivoted members connecting said bowl sections with said sheavecarrying member at opposite sides of the latter in spaced apart relation, bearing members in sets of two carried by each of said pivoted members, the sets of one pivoted member opposing the sets of the other pivoted member each having limited rotary movement in opposite directions about the pivotal axis, and a plurality of flexible members connecting the bearing members of opposite sets, the ends of said flexible members being secured to the bearing members of one set in positions the reverse of their positions on the other set and being secured to adjoining bearing members of each set in reverse position, whereby said flexible members will wind and unwind upon and from the bearing members oil? opposing sets in reverse direction as the bucket opens and'closes.

HERBERT S. ATKINSON.

WVitnesses E. S. MACDONALD, LAURA E. SMITH. 

